RECORD: Darwin, C. R. 1874.04.08-09. Olive Oil. CUL-DAR57.6. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 1.2023. RN1
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volumes CUL-DAR 54-61 contain material for Darwin's book Insectivorous plants (1875).
[6]
Ap 8' 7° 53' 1874
Red Sticks— Olive oil on Head in Pin to several glands on 4 sides of 2 leaves.
9° 3' no inflection.
1874
[Pasted over a draft of Expression, Chapter VI, folio 11. CUL-DAR57.6r]
[6v]
Ap. 9th 7° 48' 1874 1874 Olive Oil
Stick with match— Removed secretion from 4 glands with B. Paper without touching them, & gave them a little olive oil without touching them; & one gland with secretion (as I put large drops on marginal tentacles on one side of disc & these did not move I may say I put drops on 2 leaves & no inflection caused.)
8° 51' 2 of them already curved!!!
Several others not inflected though similarly treated
2° P.m. 2 or 3 others have become inflected — large drops on base of leaves & do not excite movement.
on other side of leaf— one moved which had oil without secretion having been removed.
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Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 14 May, 2023